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FILE - In this Dec. 9, 2011 file photo, singer RedFoo, center, and LMFAO perform at Z100's Jingle Ball concert at Madison Square Garden in New York. When LMFAO released its sophomore album, "Sorry for Party Rocking," it only sold 27,000 units in its first week. But almost a year later, the album is approaching platinum status thanks to the monster hits "Party Rock Anthem" and "Sexy and I Know It," and fans connecting more with the wild, party-boy vibe of the duo. (AP Photo/Evan Agostini, file) Photo by FRE